#include <stdio.h>
#include <iostream>
#include <vector>
using namespace std;

int main(){
    int n = 3;
    int arr[n][n];
    for (int i = 0; i < n; i++) {
        for (int j = 0; j < n; j++) {
            cout << arr[i][j] << endl;
        }
    }


    return 0;
} 